<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8"></meta>
		<meta content="width=device-width,initial-scale=1" name="viewport">
		<title>聊天系统页面</title>
	</head>
	<body>
		<button onclick="sendBack()">返回主系统消息</button>
	</body>
</html>
<script>
;(function(){
	console.log(window.opener.app)
})()

function sendBack(){
	console.log("this is senback")
}

</script>